Switching device.



s. HAYES & c. McL. MOSS. SWITCHING DEVICE. APPLICA'HPN FILED MAY h 193-1 ,227,434. Patented May 22, 1917.

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L WITNESSES: m ENTORS zzfu MIA rm w,

A t ATTORNEY s.- HAYES & crMklL. Moss.

SWITCHING DEVICE. APPLICATION FILED MAY h I913- 1,227,434. Patented 115522, 1917 I v zsnzns-suzn 42.

g5 26 za 'IWITNESSESQ! L L v fullm'pro'vement in Switchin whichthefollowing is a speci UNITED STA} s PATENT OFFL E s'rnrrimr a. HAYES Anncnnitnns not. moss, or rxrrsn'uncmrmmsvnvanm,

' nssmnons r0 wnsrrmenous'n nmnc'r conronnrron or rnmvsrnvama.

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To all wkomi t may concern:

Be it known that-we SrnPnn Q. HAYES and} CHARLES. MCL. oss, citizens ofthe- I nited States,.ai1d-reside nts of Pittsburgh, and State of a newand use? Devicesfof cation, Our invention relates to switchin' de:vices" and particularly to swinginglade discbnnecting switches.

in' thefi county of) Alleghery Pennsylvania, have inventeThe'objectofour invention 1st pr0 ide.

switch. Qmne inar; or. post type which Wlll thorouglilygr'ound itselfandyboth sides of a 'ci'rcult breaker with which it is interlocked,'when in full open .position.

v-I. f It a frequently becomes necessaryto repair oil circult breakers,and, when repairs are;

being made, .it is preferable to electricalb isolate the-breakers. Inorder to do this,

, it is desirable to have disconnecting switches o b th sides of thebreaker.

It. is also referable to .gro'und the terminals of reaker whenworkingonit. To thoroughly disconnect an oil circuit breaker from electricalcircuit and toso ground all termi when the circuit breaker itself;opens. mere-explicit. description o fi ourxnvention.

nals of "the sameyas to insure safety for woi'ki'nenf-isthe objectof'our invention. incur invention, we also provide means'for'a-utomatically opening theelectrical ciri i .oil circuitbreaker.wi'll .v betgiven in connection with the accomr l yi ew i Flgurelyis aview mainly in side eleva -M tion but partially in section, of apparatusmbodying our invention. Fig. 2'is an end eleviation of one pair. of.disconnecting switches. Fig. 3 isa diagrammatic view of embodyinganapplication" of our invention. Fig. 41s a diagrammatic-view *ofya'set. bf-switches. when open and grounded. p As shown. in thedrawings, an electric generator 1 delivers power through conductors 2,disconnecting switches 4, 5 am]. 6,

\ to electrically close circuit. breakers 7, 8 andj 9 o'rto operate thedisconnecting oil-;- circuitbreakers, 7, Band 9, and disconnectingswitches 10, 11 and 12 to an electrical circuit 3; When it'becom'esnecessary 1l andl2, a rod't13 is i Specification f Letters Patent.Application filed m 1', .1912. Serial No. 764,845.

' 2'9 iof the oil circuit breakers 7,8

'jllhen the blades 18.,o'f the disconnecting sw tches are fully opened,they are electr1- nrc AND manurac'runme com any, a

Patented May 212,-191 7.

the disconnectand .12 are supillars l9 and '20'that comprise-m'mes..21.,.g2 and 23- aresupported by a I main frame '24. The upper.port the sta tionary contact which are connected circuit conductors 2and 3. The bottom pillars 20 have the contact blades 1 8 pivotedthereon. z'lIothe lower. pillars 20 are attachedconductors 26 p11 are 19supmembers 25 to "and 2.7 which lead'to theterminals 2s" and and 9.

cally connected together by the engagement ofthe front end .of eachblade-with ja'ws 30 on the rear end of the next blade of the series,except that the 'last blade of each series is connected to the groundthrcjj h a grounding "contact member 31, thereby establishin-ga ermanent;gro11nd,,so long as I "the disconnecting switches' remain in that.

position. I

Bell crankv lever 14 may an "electro-magnet- .32 'W'hic reteiyes itscurrent. from a transformer'34. through an auxiliary' circuit 33. Incase an ovi'l' occurs on the circuit 2, the. tripping of'the circuitbreakers will be "energizd tp permit the 'breakersto'op'en inthe usualmanner,

- e .ep at d. by a 'an electro-magnet .35 will be ,sufiicientl energizedto-withdraw the-catch; 36 and a low the spring37 to open'thedisconnecting I switches, provided the circuit of the magnet is closed.

In order that the disconnecting switches may be prevented from openinguntil after the circuit-breakers have opened, ,we pro- 15 with a stop 40on it,

by theupper end-ofthe rod 3-9 to blades/18. 0 parallel to t e frames 21,22 and23.

j vide the breaker mechanism with-therod i which is engaged I prtenmovement of the rod.'15'-'11ntil the rod '39. T has moved downwardlyoutofiitsjpath; erate infa direction which is -We do not limit ouriny'efiiiion to this particular construction, since is equallyapplicable to any device requlrm' a (11860!!- nectin switch which willgroun the-circuit u on, ing disconnected from thesource 0 ower. I

e claim as our invention: I 1'. In an electrical circuit, thecombination' with a circuit breaker, of a disconnecting switch, forelectrically isolating said circuit breaker, and means coiiperating withthe said switch for grounding both poles of the circuit breaker' whenthe same is iso- I hated.

.. 2. In anelectrical circuit, thelcombination with a circuit breaker,of pillar-type disconnecting switches for electrically -disconnectingsaid'circuit breaker, and means cooperating with the said :switchesforgrounding both poles o'f-the circuit breaker when it isdisconnected.- v

3.'In' an' electrica-l circuit, the combinadiSQQnncCtingswitches, meansfor operating said switches manually to disconnect said" circuit breakerelectrically from said'circuit,

and means coiiperating with said switches to ground both sides ofsaidcircuit brcaker.

4 .In an electrical circuit, the combination with a circuit breaker, of.pilla r-type disconnecting switches,.imeans for manually operating 581dswitches, means a for electrically operating said switches, and means co1 operating with switches to ground both sides of said circuit. breaker.I I I '5. ,In sin-electr cal circuit, the comb nation-with a circuitbreaker, of disconnacting c ank av r -.7

said switches, means f01{" trip mg said switches automatically underabnormal oper brea crs and said disconnecting switches, and meanscooperating with's'a'id switches to,

ground: both sides" of the circuit breaker."

6. 111 I anelectri cal circuit, the i combina -.t-i'on lwith oilcircuitbreakers, of pillar-ty e disconnecting switches having "bladespivotedvto swi-n in the same plane, a plurality ofro s and bell cranklevers for manually operating said switches, an electro-magnet -foroperating said-plurality jof rods and bell crank levers, means fortripping said switches automatically under ablev normal operatingconditions, means for'inte'rlocking said circuitbreakers and saidswitches; and means switchestogroundtboth sides of s'aid circuitbreakers. v

' In an electrical cii cuit, the combination with oil circuit breakers,of

I i11arty.pe5 disconnecting switches -laa aingb to swing in the, sameplane,

s-P a plurality of rods and bell crank levers. for manually.

means for interlocking said circuit breakers and said switches,and'means coiip'e'rating -with said'switches to ground both sides ofsaid breakers. 1

8. In an electrical circuit, the combina-.

tion with oil circuit. breakers, r of. pillaretype disconnectingswitches. having blades pivoted to swing in the same plane, a pluralityof rods and bell crank levers for manually operating said switches, anelectromagnet for operating said rods and vers, a catch, anelectromagnet trip coil for actuating said catch to release said switchblades under abnormal current, conditions, a spring to Iintefloclfi'iig' said breakers andfsaid switches bell crank leopen saidswitch blades, means for I and means for connecting the switch blades Itogether and to ground when fullytop'en. I 9. In a switching device, thecombination with a plurality of terminals, of pigotally mounted bladesfor-connecting-said .ter'nn';

nals electrically, and-contact jaws mounteil mtle'corresponding nds orthe said bladeii for mechanically connecting the blades-"cm same tositions. I 10. In an electr cal clrcult, the'combinagether and iorelectrically connecting the,"

ground when in their full open p'o-l' jtion with acircuit: interrupterand disco1 1-= 'neeting switches therefor, of. means coiiperating w'iththe said switches jorfgrounding.

both sides'of the 'circuitinterrupter. whelijitf is. op ned 11. A-switchin deifice comprising aplura'li't r'sfi knife flade members pivoauy I ued-t9 turn: in; t sane; 11 in'g contact jaiwsthereofito eect I nect themtogether when in' their 11 .open positions.

'12. AI switching ;.deyic'e cuit interrupter, a. plurality mea'ns forgrounding? both poles-"oft cuit' interrupter when. the s 1y smel mpr a IOffswtc es and I :13. In anelec'triccircuit, lie-combination with acircuit interrupteranddisconnecting switches, of .meansfor opening thesaid switches when. .-th'e.- 'circuitinterrupter is triplped,'and"fineans for so electrically and amcally con-nectingthe switches that"both poles of the said circuit aregro'unded 'ooiiperating with saidiwhenthe said switchesarein th 126' me -r1 1? coo fratin 0 fi contact jaw-sonthe ends ofithe knife-blade members for electrically connectingithesaida in their open positions.

15. A switching device comprising a plhrality of stationary contactmembers, a plurality of knife-blade members for engaging the same,'saidknife-blade members being pivotally mounted in the same plane and havingcontact 'a-Ws thereon for electrically and mechanical y connecting thesaid knife blade mexnb'erstogether when in their extreme open positions.7

16. A svifitching device comprising a plurality of knife-blade membersthat are .pivota lly mounted in the same plane, and having contact jawsoncorresponding ends thereof for mechanically connecting the saidknife-blade members together and for electrically connecting them to theground when in their open positions;

17. A switching device comprising a plurali'ty of knife-blade members,some of which are rprovided with contact jaws on one end thereoi, eachof the said jaws being adapted to receive one of the knife-blade,members when the same are in their open positions.

18. A switching device comprising a plurality of knife-blade members,cooperating r statlonary contact members therefor, means forsimultaneously operating said knifeblade members, and contact members oncorresponding ends of the knife-blade members for engaging adjacentknife-blade members to the same when in their open positions.

19. A switching device comprising a plurality of knife-blade switches, acircuit interrupter, and means for grounding both poles of the circuitinterrupter when the knife-blade switches are opened.

20. A switching device comprising a plurality of knife-blade switches,a"circuit in terrupter, means for grounding both poles of the circuitinterrupter when the knifeblade switches are opened, and means forpreventing the opening'of the' said knifeblade switches until thecircuit interrupter is opened.

In testimony whereof, we have hereunto subscribed our names this 25thday of April,

STEPHEN Q,. HAYES. CHARLES McL. MOSS. 'Witnesses:

C. H. SANDERSON, B. B. HINES.

